jQuery实现居于左侧的弹出菜单

jQuery实现居于左侧的弹出菜单 .box-163css{ position:absolute; left:0; top:220px; background:#f5f5f5; line-height:117px;} #box{ width:0; overflow:hidden; float:left;} .btn1{ display:block; border:none; cursor:pointer; float:left; background:url(../images/slide-button-active.gif) no-repeat; width:43px; height:117px; text-indent:-999em; outline:none;} .active{background:url(../images/slide-button.gif) no-repeat;display:block;float:left; width:43px; height:117px; text-indent:-999em;border:none; cursor:pointer; outline:none;}